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Priority claimed from US07/147,015external-prioritypatent/US4786784A/en
Application filed by Libbey Owens Ford CofiledCriticalLibbey Owens Ford Co
Publication of DK573288D0publicationCriticalpatent/DK573288D0/en
Publication of DK573288ApublicationCriticalpatent/DK573288A/en